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Dairy Cattle And Reproduction

Subjects : industries, dairy
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Milk ~305 days - dry 60 days prior to calving






2. (FSH) causes egg to mature in females






3. Produce testosterone. located between the seminiferous tubules






4. 30-38 hours after estrus cycle begins






5. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract






6. 24 hours before end of estrus cycle






7. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.

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8. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed






9. Check feet and legs - look for masculine traits in build such as crest and muscling






10. Important 'landmark' during palpation






11. The more stressed out the male is - the less sperm he is going to produce






12. Serves as a bone cradle for the reproductive system. used greatly in palpation as a 'landmark'.






13. 336 days






14. Failure to have one testis (gonad) to descend






15. FEED






16. 1-2 days






17. Why does estrus happen before ovulation?






18. Sperm is produced here






19. 30 hours after estrus begins






20. When she is pregnant in her last trimester because she needs the energy to carry around and deliver the calf. and when the calf is born because the cow needs the fat to be deposit it into her milk for the calf's energy stores.






21. Implies the amount of estrogen production






22. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






23. Animal which has been castrated after puberty






24. Front feet and head first. (except for hogs and dogs)






25. Not under a timeline - cow can not be sold as steak






26. (male) Primary sex organ - produces sperm (male gamete) and male sex hormones - 2 total






27. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






28. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)






29. (male) definition: duct located outside of the testes. 3 parts: head - body - tail. 4 Functions:concentrate sperm - store sperm - transport sperm - site of sperm maturation. entire process takes ~40-60 days






30. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






31. Duct which connects epididymis to urethra of the penis. transports sperm at ejaculation. cut to sterilize male.






32. Important 'landmark' during palpation






33. Cycle that lasts weeks (ovulation->hormone cycles->ovulation)






34. 16-20 hours






35. Depository for semen during insemination. where urine leaves the body






36. 1. seminiferous tubules - 2. sertoli cells - 3. leydid or interstitial cells






37. % of fat in milk. makes cheeses and ice cream. regulates cost of milk






38. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %






39. Male on one pin and female on other side






40. 1. brain function - 2. blood flow - 3. willing female






41. (FSH) helps to regulate puberty - needed every day - stimulates the sertoli cells to produce nutrients for the sperm






42. Knife-loose ~1wk of growth. band-loose ~2wks of growth.






43. (male) pushes the testes upward toward the body for warmth or protection






44. Indicator of sperm production. the bigger the scrotal circumference the bigger volume of sperm because more seminal vesicles available to produce the sperm






45. Gonadotropic (GnRH) is (FSH and LH). Follical Stimulating (FSH) and Lutinizing Hormone (LH).






46. Boars and stallions-> deliver semen directly into the cervix. bulls and rams-> deliver semen into the vagina.






47. Organ of copulation - provides passageway for semen and urine - muscular organ characterized especially by its spongy - erectile tissue that fills with blood






48. Examine accessory glands - also to know how big the pelvic opening is->heritable->relates to how much dystocia that bull's daughter has






49. Provide nourishment for the developing sperm






50. Days which have increasing daylight hours

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